The festival opens Jan. 21 in Park City, Salt Lake City, Ogden and Sundance, Utah. The winners will be announced Jan. 30 from the six juries along with five audience awards.

Filmmaker and Sundance Institute alum Taika Waititi, director of “What We Do in Shadows,” will host the awards ceremony. Waititi will be premiering his latest film “Hunt for the Wilderpeople” at the festival and will direct the upcoming “Thor 3.”

Films that have won Sundance awards in recent years include “Me and Earl and the Dying Girl,” “The Diary of a Teenage Girl,” “Whiplash,” “Fruitvale Station,” “Beasts of the Southern Wild,” “The Cove” and “Man On Wire.”

The U.S. dramatic jury includes “Girls” creator and star Dunham; “Mad Men” star Hamm; Leonard, who created the Black List of Hollywood’s most popular unproduced screenplays; casting director Avy Kaufman; and music supervisor Randall Poster, who won Grammys for “Boardwalk Empire” and “The Grand Budapest Hotel.”

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The U.S. documentary jury includes Psihoyos, who recently made “Racing Extinction”; Ziering, who made “The Invisible War”; Simon Kilmurry, exec director of the International Documentary Association and exec producer of the POV series on PBS from 2006 to 2015; Jill Lepore, author of “The Name of War,” “New York Burning,” “Book of Ages” and “The Secret History of Wonder Woman”; and Shola Lynch, who made “Chisholm ’72 — Unbought & Unbossed” and “Free Angela and All Political Prisoners.”

The world cinema dramatic jury includes Kapadia, who also directed “Senna”; Mark Adams, artistic director of the Edinburgh International Film Festival; Fernanda Solorzano, chief film critic for Letras Libres magazine; Apichatpong Weerasethakul, who won Cannes’s Palme d’Or for “Uncle Boonmee Who Can Recall His Past Lives”; Mila Aung-Thwin, co-founder of documentary specialist EyeSteelFilm; and Tine Fischer, founder and director of the international film festival CPH:DOX.

The short film jury includes Key, the star and co-creator of Comedy Central’s “Key & Peele”; Gina Kwon, a development executive at Amazon Studios in half-hour TV, where she oversees the series “Transparent,” “One Mississippi” and “Z: The Beginning of Everything”; and Amy Nicholson, chief film critic of the L.A. Weekly.

The Alfred P. Sloan Feature Film Prize Jury includes Bishé, who stars in the AMC series “Halt and Catch Fire”; Mike Cahill, who won the Sloan Prize for “Another Earth” and “I Origins”; Shane Carruth, who wrote and directed “Upstream Color” and “Primer”; Clifford V. Johnson, a professor at the University of Southern California and co-director of the Los Angeles Institute for the Humanities; Ting Wu, who is based at Harvard Medical School, where she is a professor of genetics, director of space genetics, and director of the Personal Genetics Education Project.